90 Exciting! From Tropitone ... Here is contemporary Bauhaus design to enhance your lifestyle. A dramatic statement inspired by that most beautiful South American capital. And its only one of seven complete groups of casual furniture in an almost infinite number of colors. Send $ 3 for our 48-page full color catalog and the name of your nearest dealer. See why people say \\Tropitone. Probably the finest.' Tropitone East: P.O. Box 3197 Sarasota, FL 33578 West: 17101 Armstrong, Irvine, CA 92714 \, " IT@[JJD oorn I There's a small and pr-ivate comer of England .. .. p down in the Caribbean sheltered by magnificent headlands. With tea at four and brass buttons. . white coots and Gods bl .. mountains and a spirit moving upon a near-silent sea and doctor birds and doctor winds and a gentle sun on nets hung to dry and love in the afternoon. '4 "\ .. 't ..- Of the very few fine botels in the world, this hotel is one of the most honored Here you win find a true and pure spirit of ages-old English tradition. And here will come a tide in the affairs of love which when taken at its full in this quiet, elegant and intimate place brings rapture on tbe secluded shore. -'- J"'i't ..... J;' """"' \ ?t76 ..... Jt White columns on the Caribbean At Ocho Rios on J .aiea's North Coast See your travel :ent or David B. Mitchell, 777 Thud Ave., New York, NY 10017 - 212/371-1323 , &Jiling, snorkelmg. golf. tennis on the . lticent Canbbea fEßRlIARY 5, I 9 7 9 killed b)' the heat, and to have therefore been alive. Traditionally, in biology, a negative on a control such as this is con- sidered essential to the acceptance as a sign of life of a positive on a previous experiment, for a hundred and sixty de- grees Celsius is not enough to destroy lTIOSt inorganic compounds. For their controls, Levin and Horo- WItz had planned to use soil from the fir t digging which remained in the hopper of the biologv package; they wanted the soil for the controls to be as much like the soil used in the first cycle as possible, for that soil was known to be active. This was just as well, for although the san1pler arn1 was now back in commission after the no-go on sol 14, they were a little nervous about using it. Inside each in- strument, an empty incubation cham- ber was rotated under the hopper; then each of the chambers, with the soil in it, was rotated to the place where it was heated. Vents, or valves in the pipes leading fr om the chambers, were opened for the gases to escape. After that, the vents were closed, and Levin's and Horowitz' soil was allowed to in- cubate exactly as It had the first time. Roth results-which were reported on sol 31, or August 20th, exactly a month aftel the first Llnding and two and a half weeks before the second- were negative. Horowitz' second-peak count was fifteen, the maXImum that could still be called inactive. Levin, who, as before, had got his results first, found that the line on his graph made I an initial spurt up to about a thousand counts a minute over background (this < was later attributed to a residue of radi- oactive gas from the first cycle) and then dropped down to about a hundred. i\t a later press conference summariz- ing the biology team's results thus far, Klein said that the active result of Le- vIn's first C) cle and the destructIon of the activity by the heat-sterilized sec- ond cycle "'would be interpreted in tel- rest rial soils as indicative of biological activity." The same, of course, could be said of Horowitz' results. Klein 1(lded, though, that Oyall1a's evidence that there might be oxidants, together with Riemann's failure so far to dIs- cover any organic material, still pre- vented that conclusion from being drawn concerning Mars. l)ecision trees work very well In pro- gramming computers to solve mathe- matical problems; the) work less well in plotting strategy in che3s games, be- cause living opponents are not always predictable, and, as Viking would prove over and over agclÎn, they wouldn't work at all wen in pinning down the ".r. J